diff --git a/package.json b/package.json
index 5e5d768..c177aa6 100644
--- a/package.json
+++ b/package.json
@@ -109,7 +109,7 @@
     "rollup-plugin-visualizer": "^4.0.4",
     "ts-jest": "^26.1.0",
     "tslib": "^2.0.0",
-    "typescript": "^3.9.5"
+    "typescript": "^4.0.0"
   },
   "config": {
     "commitizen": {
diff --git a/yarn.lock b/yarn.lock
index 42da8ff..dc6b9a8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -15485,10 +15485,10 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@^3.9.5:
-  version "3.9.5"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.5.tgz#586f0dba300cde8be52dd1ac4f7e1009c1b13f36"
-  integrity sha512-hSAifV3k+i6lEoCJ2k6R2Z/rp/H3+8sdmcn5NrS3/3kE7+RyZXm9aqvxWqjEXHAd8b0pShatpcdMTvEdvAJltQ==
+typescript@^4.0.0:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.2.tgz#7ea7c88777c723c681e33bf7988be5d008d05ac2"
+  integrity sha512-e4ERvRV2wb+rRZ/IQeb3jm2VxBsirQLpQhdxplZ2MEzGvDkkMmPglecnNDfSUBivMjP93vRbngYYDQqQ/78bcQ==
 
 ua-parser-js@^0.7.18:
   version "0.7.19"